Anatomy and Physiology

    Cardiovascular System
    What substances produce “colloid osmotic pressure”?
    Plasma proteins (also called colloids) are present in blood, but not in the interstitial fluid, and so contribute “colloid osmotic pressure” to blood.
    Author: rikazzz Comment
    Respiratory System
    What are the conditions under which O2 diffuses from the blood plasma into red blood cells and attaches to haemoglobin? When partial pressure of oxygen dissolved in plasma is:
    Movement of oxygen from the plasma into RBC occurs in the alveolar capillaries. The higher number (100 mmHg) should be chosen to ensure that a concentration gradient exists.
    Author: rikazzz Comment
    Reproductive System
    Which of the following is/are NOT associated with the male reproductive system?
    Estrogens are female sex hormones. BTW, the tunica vaginalis is the serous membrane around the scrotal cavity.
    Author: rikazzz Comment
    Skeleton and Joints
    What is the name given to the central tunnel of an osteon that contains blood vessels?
    Also known as the central canal. The medullary canal is a macroscopic structure within the diaphysis (shaft) of a long bone.
    Author: rikazzz Comment
    Endocrine System
    Which statement about the hypothalamus is correct?
    The hypothalamus is part of the brain so is composed of neural tissue. Epinephrine and norepinephrine are released from the adrenal medulla.
    Author: rikazzz Comment
    Cells and Tissues
    Which of the following is NOT epithelial tissue?
    The dermis contains some of all four types of tissue.
    Author: rikazzz Comment
    Cardiovascular System
    Pressure is a quantity derived from force and the area in contact with the force. What is it that pressure measures?
    Pressure is force divided by area and is measured in N/m2 (= pascal). Choice A is wrong as pressure is not a force.
    Author: rikazzz Comment
    Gastrointestinal System
    Why is insulin not given as an oral drug?
    Insulin is a protein so would be hydrolysed by protein-digesting enzymes in the stomach (and duodenum).
    Author: rikazzz Comment
    Cells and Tissues
    One of the following is NOT a serous membrane. Which one?
    Mucosa is a mucous membrane (and secretes mucus).
    Author: rikazzz Comment
    Cardiovascular System
    Which blood cells are involved in protecting the body from pathogens and foreign cells?
    Leucocytes (white blood cells) include NK (natural killer), T and B lymphocytes and macrophages and microphages.
    Author: rikazzz Comment